Complex classes like Requests_Cookie often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Requests_Cookie, and based on these observations, apply Extract Interface, too.
| 1 | <?php | ||
| 15 | class Requests_Cookie { | ||
| 16 | /** | ||
| 17 | * Cookie name. | ||
| 18 | * | ||
| 19 | * @var string | ||
| 20 | */ | ||
| 21 | public $name; | ||
| 22 | |||
| 23 | /** | ||
| 24 | * Cookie value. | ||
| 25 | * | ||
| 26 | * @var string | ||
| 27 | */ | ||
| 28 | public $value; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * Cookie attributes | ||
| 32 | * | ||
| 33 | * Valid keys are (currently) path, domain, expires, max-age, secure and | ||
| 34 | * httponly. | ||
| 35 | * | ||
| 36 | * @var Requests_Utility_CaseInsensitiveDictionary|array Array-like object | ||
| 37 | */ | ||
| 38 | public $attributes = array(); | ||
| 39 | |||
| 40 | /** | ||
| 41 | * Cookie flags | ||
| 42 | * | ||
| 43 | * Valid keys are (currently) creation, last-access, persistent and | ||
| 44 | * host-only. | ||
| 45 | * | ||
| 46 | * @var array | ||
| 47 | */ | ||
| 48 | public $flags = array(); | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Reference time for relative calculations | ||
| 52 | * | ||
| 53 | * This is used in place of `time()` when calculating Max-Age expiration and | ||
| 54 | * checking time validity. | ||
| 55 | * | ||
| 56 | * @var int | ||
| 57 | */ | ||
| 58 | public $reference_time = 0; | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Create a new cookie object | ||
| 62 | * | ||
| 63 | * @param string $name | ||
| 64 | * @param string $value | ||
| 65 | * @param array|Requests_Utility_CaseInsensitiveDictionary $attributes Associative array of attribute data | ||
| 66 | */ | ||
| 67 | 	public function __construct($name, $value, $attributes = array(), $flags = array(), $reference_time = null) { | ||
| 86 | |||
| 87 | /** | ||
| 88 | * Check if a cookie is expired. | ||
| 89 | * | ||
| 90 | * Checks the age against $this->reference_time to determine if the cookie | ||
| 91 | * is expired. | ||
| 92 | * | ||
| 93 | * @return boolean True if expired, false if time is valid. | ||
| 94 | */ | ||
| 95 | 	public function is_expired() { | ||
| 112 | |||
| 113 | /** | ||
| 114 | * Check if a cookie is valid for a given URI | ||
| 115 | * | ||
| 116 | * @param Requests_IRI $uri URI to check | ||
| 117 | * @return boolean Whether the cookie is valid for the given URI | ||
| 118 | */ | ||
| 119 | 	public function uri_matches(Requests_IRI $uri) { | ||
| 130 | |||
| 131 | /** | ||
| 132 | * Check if a cookie is valid for a given domain | ||
| 133 | * | ||
| 134 | * @param string $string Domain to check | ||
| 135 | * @return boolean Whether the cookie is valid for the given domain | ||
| 136 | */ | ||
| 137 | 	public function domain_matches($string) { | ||
| 177 | |||
| 178 | /** | ||
| 179 | * Check if a cookie is valid for a given path | ||
| 180 | * | ||
| 181 | * From the path-match check in RFC 6265 section 5.1.4 | ||
| 182 | * | ||
| 183 | * @param string $request_path Path to check | ||
| 184 | * @return boolean Whether the cookie is valid for the given path | ||
| 185 | */ | ||
| 186 | 	public function path_matches($request_path) { | ||
| 222 | |||
| 223 | /** | ||
| 224 | * Normalize cookie and attributes | ||
| 225 | * | ||
| 226 | * @return boolean Whether the cookie was successfully normalized | ||
| 227 | */ | ||
| 228 | 	public function normalize() { | ||
| 244 | |||
| 245 | /** | ||
| 246 | * Parse an individual cookie attribute | ||
| 247 | * | ||
| 248 | * Handles parsing individual attributes from the cookie values. | ||
| 249 | * | ||
| 250 | * @param string $name Attribute name | ||
| 251 | * @param string|boolean $value Attribute value (string value, or true if empty/flag) | ||
| 252 | * @return mixed Value if available, or null if the attribute value is invalid (and should be skipped) | ||
| 253 | */ | ||
| 254 | 	protected function normalize_attribute($name, $value) { | ||
| 302 | |||
| 303 | /** | ||
| 304 | * Format a cookie for a Cookie header | ||
| 305 | * | ||
| 306 | * This is used when sending cookies to a server. | ||
| 307 | * | ||
| 308 | * @return string Cookie formatted for Cookie header | ||
| 309 | */ | ||
| 310 | 	public function format_for_header() { | ||
| 313 | |||
| 314 | /** | ||
| 315 | * Format a cookie for a Cookie header | ||
| 316 | * | ||
| 317 | * @codeCoverageIgnore | ||
| 318 | 	 * @deprecated Use {@see Requests_Cookie::format_for_header} | ||
| 319 | * @return string | ||
| 320 | */ | ||
| 321 | 	public function formatForHeader() { | ||
| 324 | |||
| 325 | /** | ||
| 326 | * Format a cookie for a Set-Cookie header | ||
| 327 | * | ||
| 328 | * This is used when sending cookies to clients. This isn't really | ||
| 329 | * applicable to client-side usage, but might be handy for debugging. | ||
| 330 | * | ||
| 331 | * @return string Cookie formatted for Set-Cookie header | ||
| 332 | */ | ||
| 333 | 	public function format_for_set_cookie() { | ||
| 351 | |||
| 352 | /** | ||
| 353 | * Format a cookie for a Set-Cookie header | ||
| 354 | * | ||
| 355 | * @codeCoverageIgnore | ||
| 356 | 	 * @deprecated Use {@see Requests_Cookie::format_for_set_cookie} | ||
| 357 | * @return string | ||
| 358 | */ | ||
| 359 | 	public function formatForSetCookie() { | ||
| 362 | |||
| 363 | /** | ||
| 364 | * Get the cookie value | ||
| 365 | * | ||
| 366 | * Attributes and other data can be accessed via methods. | ||
| 367 | */ | ||
| 368 | 	public function __toString() { | ||
| 371 | |||
| 372 | /** | ||
| 373 | * Parse a cookie string into a cookie object | ||
| 374 | * | ||
| 375 | * Based on Mozilla's parsing code in Firefox and related projects, which | ||
| 376 | * is an intentional deviation from RFC 2109 and RFC 2616. RFC 6265 | ||
| 377 | * specifies some of this handling, but not in a thorough manner. | ||
| 378 | * | ||
| 379 | * @param string Cookie header value (from a Set-Cookie header) | ||
| 380 | * @return Requests_Cookie Parsed cookie object | ||
| 381 | */ | ||
| 382 | 	public static function parse($string, $name = '', $reference_time = null) { | ||
| 425 | |||
| 426 | /** | ||
| 427 | * Parse all Set-Cookie headers from request headers | ||
| 428 | * | ||
| 429 | * @param Requests_Response_Headers $headers Headers to parse from | ||
| 430 | * @param Requests_IRI|null $origin URI for comparing cookie origins | ||
| 431 | * @param int|null $time Reference time for expiration calculation | ||
| 432 | * @return array | ||
| 433 | */ | ||
| 434 | 	public static function parse_from_headers(Requests_Response_Headers $headers, Requests_IRI $origin = null, $time = null) { | ||
| 489 | |||
| 490 | /** | ||
| 491 | * Parse all Set-Cookie headers from request headers | ||
| 492 | * | ||
| 493 | * @codeCoverageIgnore | ||
| 494 | 	 * @deprecated Use {@see Requests_Cookie::parse_from_headers} | ||
| 495 | * @return string | ||
| 496 | */ | ||
| 497 | 	public static function parseFromHeaders(Requests_Response_Headers $headers) { | ||
| 500 | } | ||
| 501 | 
This check marks property names that have not been written in camelCase.
In camelCase names are written without any punctuation, the start of each new word being marked by a capital letter. Thus the name database connection string becomes
databaseConnectionString.